Heat-exchange device



Dec. 14,1926. v v 1,610,878

, c. METZGER ET AL HEAT EXCHANGE DEVI CE Original Filed May 11. 1921Fuji Inveninm: Guz'ZMeZz Qer, EwaZdLl6icfien,

2, ZWM' 1 Wm l the compressed Patented Dec. 14, 1926.

STATE;

CARL METZGEI-L AND EW'ALI) L'UTE'CHEN, 01E MUNICH, GERTIIANY.

HEAT-EXCEIAIEGE DEVICE.

flrigiual application filed Ii'r'ay 1.1, 15521v Serial No. 468,722, a din August 8 1919. Divided e and this application filed October 5. 1922.

This invention relates to a device for collecting the heat of ('onmreiion from gases for the purpose of util' "1;: such collected heat and atthe same time reducing the temperature of the gases.

The invention has for its primary object to provide a simple and compactdevice for the above purpose in which provision is made for theabstractitai of theheat fron'i at the time of compression and forcollecting the relatively cool compressed gases in a chamber from whichthey may be withdrawn and utilized f or various purposes. Further, wepropose in one embodiment of the invention to advantageously utilize theabstracted heat, as for the purpose of supplying a suitable heatingmedium from an external source to the cylinder or cylinders of anengine.

It is lso an objectof our present improvements to provide such a devicewhereby the heat is abstracted, as the gases are compressed.

lVit-h the above and other objects in view, the invention consists inthe improved device as hereinafter more particularly de-- scribed,illustrated in the accompanying drawing, and subsequently incorporatedin the subjoined claims.

Fig. 1 is a central section partly in elevation of our improved device.Fig. 1 is a diagrammatic view of the same showing parts of the structureof Fig. 1. Fig. 2 is a section taken on line 22 of Fig. l and Fig. 8 isa section taken on line 3-3 of Fig. 1.

In the drawing, wherein we have illustrated one simple embodiment of theinvention, we have shown a vertical sectional view of the devicewithcertain parts thereof in elevation.

In the example of our present improvements shown in Fig. 1, thecompressor cylinder indicated at 1 may be of any suitable bore diameterwithin which the usual piston having the predetermined length of strokeoperates. In the present instance, we have shown said cylinder as beingvertically disposed, though of course this is not essential, and at oneof its ends this cylinder is provided with a head 2 suitably securedthereon. In spaced relation to the cylinder head and supported therefromby the pillars 3 we provide the wall 4-. As will be hereinafterexplained, in certain instances it may Serial No. 582,635.

be desirable to substitute a continuous wail preferably of insulatedmaterial for the pillars 3 to thereififi brovide a closed chamberbetween the head i and wall a.

lathe form of invention shown in Fig. 1-

the wall 4 forms the bottom of a chamber 5 having a valve 8 therein ofgeneral conical form guided at its apex by the guide means 10 on onewall of said chamber and provided at its other end with an annularinclined surface which is normally held in contact with a valve seat llin the wall 4iby means of the spring 9. The valve seat 11 is formed atone side of a chamber or cavity 7 in the wall t and a plurality ofrelatively small diameter tubes or pipes 6 communicate at one of theirends with the opposite side of this chamber, tubes preferably convergingto said chamber from their other ends which are fixed in the cylinderhead 2 and open upon the inner face thereof.

From the above description,it will be apparent that the compressed gasesin the cylinder 1 are forced under pressure by the piston through thesmall diameter tubes or pipes 6 and into the cavity 7. The spring 9odors such resistance to the opening movement of the valve 8 that beforethe gases are admitted to the chamber 5, the heat of compression isabstracted therefrom by radiation through the walls of the tubes 6 andis either dissipated into the atmosphere or is collected in the chamber2* formed between the cylinder head 2 and the wall t. If desired, inorder to augment the abstraction of heat from the compressed gases insaid tubes,

water may be circulated through said cham-' ber and the heated waterwithdrawn therefrom and conducted to a relatively remote point forutilization. cylinder head 2 as well as the wall 4 may consist ofmaterials which are of, high heat absorbing capacity but which willrelease or radiate the heat very slowly. It is preferable to make thecylinder head 2 or the wall 4, or both of copper.

7 Then the compressed gases have accunnb lated in the cavity 7 to suchextent that the pressure thereof exceeds the pressure of the spring 9,the valve 8 is lifted from its seat so that the relatively coolcompressed gases will enter the chamber 5. From this chamher thecompressed and cooled gases may be withdrawn and utilized for variouspurposes.

From the above, it will be seen that the Also, if desired, the

invention has a two-fold purpose, namely, first to abstract the heatfrom the compressed gases and thereby cool the same, and secondly, tocollect such abstracted heat and apply the same to an advantageous use.

The number of pipes or tubes 6 to be employed and their individual crosssectional area, as well as their aggregate area is of course, determinedin accordance with the capacity of the compression cylinder 1 and thevolume of gas which can be compressed therein and whereby, after thegases have passed into these tubes or pipes beyond the cylinder head 2,the heat of compression will be abstracted therefrom before the valve 8is lifted and the gases admitted to the chamber 5.

This application is a division of our copending application for patent,Serial No. 468,722, filed May 11, 1921. While we have herein disclosedone practical example of the device, it will nevertheless, be understoodthat substantially similar results might be obtained in variousalternative forms thereof, and we therefore, reserve the privilege ofresorting to all such legitimate changes as may be fairly embodiedwithin the spirit and scope of the appended claims.

We claim:

1. A device for abstracting the heat of compression from gasescomprising, a compressor cylinder, a chamber arranged in spaced relationto the cylinder head and having'an ingress opening, a spring seatedvalve within sald chamber normally closlng said opening, and a pluralityof relatively small diameter tubes communicating at one of their endswith said ingress opening and at their other ends with the end of thecompressor cylinder, said tubes adapted to receive the compressed gasesfrom said cylinder and give up the heat of compression through the tubewalls during the travel of the gases through said tubes and prior to theaccumulation of sufficient pressure at the ingress opening to open saidvalve and admit the gases to said chamber.

2. A. device for abstracting the heat of compression from gasescomprising, a compressor cylinder, a wall supported by one of thecylinder heads and spaced therefrom and having a central cavity therein,a chamher at one side of said wall into which said cavity opens, aspring seated valve normally closing the open side of said cavity, and aplurality of spaced tubes of relatively small diameter connecting saidcavity with the end of the compressor cylinder and adapted to receivethe compressed gases from the latter and to give up the heat ofcompression therefrom through the tube walls into the space between saidcavity and the cylinder head, the relatively cool gases collecting insaid cavity and the accumulated pressure thereof opening said valve toadmit the cool gases to said chamber.

In testimony whereof we herewith aifiX our signatures.

CARL METZGER. EVVALD L-U'TSCHEN.

